<template>

  <header class="header">
    
    <h1>todos</h1>
   <input id="toggle-all" class="toggle-all" type="checkbox" v-model='isall'/>
    <label for="toggle-all"></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      v-model.trim="task"
      @keydown.enter="addTask"
      autofocus
    />
    
  </header>
</template>

<script>
export default {
  props:{
    list:{
      type:Array,
      required:true
    }
  },
  data() {
    return {
      task: '',
    }
  },
  methods: {
    addTask() {
     this.$emit('addtask', this.task)
     this.task=''
    },
  },
  computed:{
   isall:{
     get(){
      return this.list.every(item=>item.isDone)
    },
    set(val){
     this.$emit('checkall',val)
    }
   }
  }
}
</script>
